<template>
    <div class="cmt-container">
        <h3 >评论</h3>
        <textarea placeholder="你最多可以说100字" name="" id="" cols="30" rows="10" maxlength="100" v-model="msg"></textarea>
        <mt-button type="primary" size="large" @click="postComment">发表评论</mt-button>
        <div class="cmt-list">
            <div class="cmt-item" v-for="(item, i) in comments" :key="item.add_time">
                <div class="cmt-title">
                    第{{ i+1 }}楼&nbsp;&nbsp;用户：{{ item.user_name }}&nbsp;&nbsp;发表时间：{{item.add_time | dateFormat }}
                </div>
                <div class="cmt-content">
                {{ item.content === 'undefined'?'此用户很懒，啥都没说':item.content }}
                </div>
            </div>
            <mt-button type="primary" size="large" plain @click="getMore">加载更多</mt-button>
        </div>
        
    </div>
</template>
<script>
import { Toast } from 'mint-ui'

export default {
    data(){
        return {
            pageIndex:1,
            comments:[],
            msg:''

        }
    },
    created(){
        this.getComments()
    },
    methods:{
        getComments(){
            this.$http.get('api/getcomments/' + this.id +"?pageindex=" + this.pageIndex).then(result =>{
                if(result.body.status === 0){
                    // console.log(result.body)
                    // console.log(this.pageIndex)
                    this.comments = this.comments.concat(result.body.message)
                }else{
                    Toast:("获取评论失败")
                }
            })
        },
        getMore(){
            this.pageIndex++;
            this.getComments();

        },
        postComment(){
            if(this.msg.trim() === ''){
                return Toast('评论内容不能为空')
            }

            this.$http.post('api/postcomment/' + this.id ,{content:this.msg.trim()}).then(result =>{
                var cmt = { user_name:'匿名用户',add_time:Date.now(),content:this.msg.trim() };
                this.comments.unshift(cmt);
                this.msg ="";
            })
        }
    },
        props:["id"]
}
</script>
<style lang="scss" scoped>
.cmt-container{
        h3{
            font-size:18px;
        }
        textarea{
            font-size: 14px;
            height: 85px;
            margin: 0;
        } 
        .cmt-list{
            margin: 10px;
            .cmt-item{
                font-size: 13px;
                .cmt-title{
                    line-height: 30px;
                    background: #ccc;

                }
                .cmt-cmt-content{
                    line-height: 35px;
                    text-indent: 2em;
                }
            }

        }
}
</style>